Here is the color palette based on your specifications for a GHW Fandom wiki light mode:

json
{
  "palette_name": "GHW Fandom Wiki Light Mode",
  "colors": [
    {
      "name": "Article Background",
      "hex_code": "
          
          #E3F2FD
       "
    },
    {
      "name": "Accent Color",
      "hex_code": "
          
          #9C27B0
       "
    },
    {
      "name": "Sticky Nav",
      "hex_code": "
          
          #BBDEFB
       "
    },
    {
      "name": "Link Color",
      "hex_code": "
          
          #1E88E5
       "
    },
    {
      "name": "Community Background",
      "hex_code": "
          
          #EDE7F6
       "
    },
    {
      "name": "Community Text Color",
      "hex_code": "
          
          #1A237E
       "
    },
    {
      "name": "Community Header Color",
      "hex_code": "
          
          #6A1B9A
       "
    }
  ]
}

This palette features a range of colors suitable for a light mode theme, ensuring good contrast and readability.

Would you like to add any additional colors or make adjustments to this palette?